Now the new details surrounding the biggest doping ban if baseball history. Lawyers for alex rod xwez heading to federal court this morning trying to overturn the superstar's season-long suspension. And the man who allegely gave rodriguez performance-enhancing drugs is speaking out. Ryan smith has the story. Reporter: This morning, alex rodriguez's camp is going federal court. His attorney tells abc news he'll file a new lawsuit to overturn the historic 162-game suspensions handed down by an arbitrator this weekend the. The allegations specific to this charge are lies. Reporter: In an interview with "60 minutes" the man who allegedly supplied per forpans-enhancing drugs describes the litany of drugs he says he gave rodriguez. Testosterone. Insulin growth factor one. Human growth hormone. And, some -- different forms of peptides. Reporter: In the interview, he makes stunning claims about how far a-rod would go in his alleged drug use. We ended up drawing the blood in the bathroom of a restaurant/bar/club in the bathroom stall. orter: HE SHARED TEXT Messages allegely sent from a-rod, including this one which reads, feel good, big day tomorrow, what do you have? See ya, there it is! Number 600! Reporter: But his attorney, joe tacopina says the text messages were not about drug. He's adamant that the star passed blind drug tests. He's not once failed a drug test. Reporter: But bosh said that was easy to do. It was almost cake walk. Reporter: Team rodriguez looking forward to hitting back at what they say is an unfair fight. They're filing suit today. Thank you, ryan. Detroit auto show kicks off today with plenty to celebrate

This transcript has been automatically generated and may not be 100% accurate.

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